You should get multiple quotes from contractors and factor in any unexpected costs or delays.

The policy I have covers accidents and illnesses:  $100 annual deductible, 90% reimbursement, no cap, chronic conditions covered, routine items that aren't accident/illness not covered. 

It could be re-written under a post of "How to fly a King Air" and most would equally accept it. hahaha what if we say the wall st guy is not stupid they know how to protect assets, options are just like insurance premium to insure when the unexpected happen real estate, the question would be are you using ACV or replacement cost method LOL it's in all those details sometimes we found opportunities, both in real estate and stock index. 

I am inclined to go with contractor 3, but how do I deal with the risk of worker injury or accident on the job?

I don't expect I'll find termite damage in the market I'm looking in, though I'm wondering how you deal with these unexpected "nightmare scenarios".

In fact one was rendered blind as a result of the accident.'

Even maybe pop in unexpectedly on some days when it is not rented just to do an eye test. 

One downside we've found is that payments made by tenants can't be refunded and tracked in the system (like when a tenant has a recurring payment scheduled but makes an additional payment by accident).

That way they are free of any unexpected bills. 

It's not like car insurance where they can choose not to cover you because of too many accidents.